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Step 1520-1
You may be directed to this MAP for several reasons:
1. There is no indication of activity when the power button is pressed. None of the
LEDs light and none of the fans, including the fan in the power supply, start to
turn.
Go to “Step 1520-2.”
2. When the power switch is pressed, the system begins to power on, but the
power does not stay on.
Go to “Step 1520-3” on page 2-17.
Step 1520-2
1. Turn the power off.
2. Check that the voltage selection switch on the power supply is in the correct
position.
3. Check that the external power cable to the system unit has continuity.
4. Check that the power outlet has been wired correctly with the correct voltage.
5. Check that the external power cable is plugged into both the system unit and the
power outlet.
Did you find a problem?
NO Go to “Step 1520-3” on page 2-17.
YES Correct the problem. Go to "Map 0410: Repair Checkout" in the
Diagnostics Information for Multiple Bus Systems.
2-16 7043 43P Series Service Guide